Long Island Mac Arthur Airport
Aircraft Accident/Incident Report

Kings Park, New York 11754
Thursday, May 4, 2006 10:30 EDT

NTSB Narrative Summary Released at Completion of Accident

The helicopter was in cruise flight, about 1,400 feet above ground level, when the flight instructor heard a "rumbling" from beneath and behind the cockpit. Soon after, the rumbling became louder, the oil temperature increased, the oil pressure dropped to "zero," and the engine stopped producing power. The flight instructor adjusted the flight controls for autorotation, and selected a high school athletic field for the forced landing. He attempted to extend the helicopter's glide to reach the field, while maintaining rotor rpm. Just prior to touchdown, the tail of the helicopter struck the athletic field's perimeter fence, which resulted in a loss of control, and collision with terrain. Examination of the helicopter's engine revealed that the oil suction screen was completely occluded by metal particles. The number 3 cylinder was removed, and the associated piston and connecting rod were stuck in the cylinder bore. The connecting rod was fractured at the yoke, and free of the crankshaft. The connecting rod cap was fragmented, and the fragments were found scattered in the oil sump. The number 3 connecting rod bearing material was completely extruded and fragmented, and a mode of failure could not be determined. Examination of the engine maintenance records revealed that the engine had accrued 2,157 total hours of operation, 759 total hours since overhaul, and 90 total hours since the number 1 cylinder assembly was replaced due to low compression and a broken piston ring.

NTSB Probable Cause Narrative

Loss of engine power due to the failure of the number 3 connecting rod bearing. A contributing factor was the lack of suitable terrain for the emrgency landing.

Event Information

Type of Event Accident
Event Date 5/4/2006
Event Day of the Week Thursday
Time of Event 1030
Event Time Zone Eastern Daylight Time
Event City Kings Park
Event State NEW YORK
Event Country --
Zipcode of the event site 11754
Event Date Year 2006
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 405126N
Event Location Longitude 0731028W
Event Location Airport Long Island Mac Arthur
Event Location Nearest Airport ID KISP
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 6
Degrees magnetic from airport --
Airport Elevation 99
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1056 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 160
Weather Observation Facility ID ISP
Elevation of weather observation facility 99
Distance of event from weather observation facility (units?) 5
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 3500
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 19
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) 300
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.85
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 2
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 21007
NTSB Notification Source FAA EROC
NTSB Notification Date May 4 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Feb 26 2007 11:14AM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office Farmingdale, NY

Aircraft Involved

Aircraft #1

Aircraft Registration Number N38DM
NTSB Number NYC06LA106
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Schweizer
Aircraft Model 269C
Aircraft Series Identifier --
Aircraft Serial Number 1458
Certified Max Gross Weight 2050
Aircraft Category Helicopter
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 3
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jan 1 2006 12:00AM
Airframe hours since last inspection 90
Airframe Hours 2157
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Wings Air, LLC
Aircraft Owner Street Address 136 Tower Road #M
Aircraft Owner City White Plains
Aircraft Owner State NY
Aircraft Owner Country USA
Aircraft Owner Zipcode 10604
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Instructional
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code ISP
Departure City ISLIP
Departure State NY
Departure Country USA
Departure Time 1020
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code HPN
Destination City WHITE PLAINS
Destination State NY
Destination Country USA
Specific Phase of Flight Emergency landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 9 2006 12:40PM
User who most recently changed record MUZD
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --